24
SBS Plus, SBS funE, SBS MTV, (pay TV), Amazon Video, (streaming)
South Korea
Korean
Source: Wikipedia
Kim Dan-oh, a composer and vocal trainer.
(김소리) as
Vocal training judge
Shim Min-chul, CEO of 825 Entertainment.
Kang Shin-hyuk, the former Producer of Red Queen.
(이수지) as Suji/Suah